We found 13 dictionaries that define the word running light:

General (12 matching dictionaries)

1. running light: Merriam-Webster
2. running light: American Heritage Dictionary of the English Language
3. running light: Collins English Dictionary
4. running light: Vocabulary.com
5. running light: The Wordsmyth English Dictionary-Thesaurus
6. running light: Infoplease Dictionary
7. running light: Dictionary.com
8. running light: Rhymezone
9. running light: FreeDictionary.org
10. running light: Mnemonic Dictionary
11. running light: TheFreeDictionary.com
12. running light: Wiktionary

Computing (1 matching dictionary)

13. running light: Encyclopedia

(Note: See running_lights as well.)

Definitions from Wiktionary (running light) ▸ noun:  (nautical) A light shown by vessels between sunset and sunrise. Opposite: running heavy, loaded, full Types: headlight, fog light, brake light, turn signal, reverse light, more... ▸ Words similar to running light ▸ Usage examples for running light ▸ Idioms related to running light ▸ Wikipedia articles (New!) ▸ Words that often appear near running light ▸ Rhymes of running light ▸ Invented words related to running light